Network Engineer (TS/SCI w/ Poly)

Location: Chantilly, VA 20151 – 100% on‑site; relocation support considered for candidates outside the commuting area.

Responsibilities

• Data Center Operations: Manage, configure, and maintain mission-critical data center network infrastructure running Cisco IOS and Cisco NX-OS platforms
• Network Segmentation and Routing: Design, deploy, and troubleshoot complex Layer 2 and Layer 3 architectures, including VLANs, advanced routing protocols (OSPF, BGP, EIGRP), and access control lists (ACLs)
• Security and Compliance: Implement and uphold robust network security policies, segmentation, and perimeter controls across secure environments
• Hybrid Cloud Transformation: Collaborate with agile cross-functional engineering teams to integrate on-premises data center networking with hybrid cloud architectures
• Optimization and Performance Tuning: Monitor network health, diagnose throughput and latency bottlenecks, and execute configuration tuning to optimize network traffic processing
• Implementation and Deployment: Lead hardware provisioning, baseline configurations, operating system upgrades, and rollout of new network solutions with minimal service disruption
• Documentation and Standards: Maintain comprehensive network topology diagrams, standard operating procedures (SOPs), and change-management documentation

Education and Qualifications

• U.S. citizenship
• Current TS/SCI with agency-specific polygraph required for consideration
• Bachelor’s degree in Computer Science, Information Systems, or a related technical discipline (equivalent years of direct experience may be considered in lieu of a degree)
• 5+ years of dedicated hands-on experience configuring and administering Cisco IOS and/or Cisco NX-OS within enterprise data center environments
• Effective written and verbal communication skills to work as part of a collaborative, cross-functional team

Core Technical Competencies

• Demonstrated expertise in configuring and troubleshooting VLANs, trunking, subnets, and inter-VLAN routing
• In-depth practical knowledge of dynamic routing protocols and network security implementations
• Demonstrated track record leading enterprise Cisco implementations, infrastructure migrations, and network operations management
• Experience working within Agile/Scrum delivery models
• Demonstrated ability to troubleshoot issues independently while partnering effectively with multidisciplinary systems, cloud, and security teams

Preferred Qualifications

• Data Center Architecture: Direct experience configuring Top-of-Rack (ToR) switch deployments and data center fabric topologies
• Storage Networking: Familiarity with Storage Area Network (SAN) configuration, including Fibre Channel, FCoE, or iSCSI environments
• Cloud and Automation: Exposure to hybrid cloud connectivity (AWS Direct Connect, Azure ExpressRoute) and network automation scripting (Python, Ansible)
• Certifications: Active Cisco certifications (CCNP Enterprise, CCNP Data Center, or CCIE) are highly desirable